THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 51

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A dependent random sample from two normally distributed populations gives the following results:
n = 20,
= 26.5,s₂ = 3.2
-Calculate the margin of error for the given data assuming 95% confidence level: n_x = 250
_x = 0.65 n_y = 360
_y = 0.78

• A)0.085
• B)1.05
• C)0.052
• D)0.072

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Definitions:

Dinoflagellate

A group of single-celled, mostly marine organisms with two flagella, known for causing bioluminescence and red tides.

Euglenoid

Free-living, flagellated protist in the supergroup Excavata; some have chloroplasts descended from a green alga.

Amoeba

Single-celled protist that extends pseudopods to move and to capture prey.

Mantle

Of mollusks, a skirt-like extension of the body wall.